17
Table 6.4.1
Pos.
Name
Purpose
1
Valve, tap
Closing, opening of feed water flow from boiler
2
Valve, tap
Closing, opening of return water flow to boiler
3
Valve, tap
Draining, venting
4
Valve, tap
Water draining from boiler
5
Safety valve
Over-pressure relief
6
Non-return valve
Feed water flow release at a closed feed water valve
(tap), pos. 1
7
Contact pressure gauge
Feed water pressure control, emergency alarm
8
Pressure gauge
Return water pressure control
9
Thermometer
Feed water temperature control
10
Thermometer
Return water temperature control
11
Safety valves
Redundancy of valve functions, pos. 5.
12
Valve, tap
Closing of water flow through recycle loop
13
Non-return valve
Preventing a backward flow through recycle loop
14
Pump
Water flow maintenance in boiler circuit
15
Filter
Solids collection
16
Three-way (four-way) valve
Flow separation or mixing
17
Tap, valve
Compensatory loop closing with a device against a
reckless closure.
18
Compensatory vessel
Compensation of changes in water volume
19
Valve, tap
Hot water treatment pump service
20
Filer
Solids collection
21
Pump
Water flow maintenance in hot water treatment circuit
22
Non-return valve
Preventing a backward flow in hot water treatment
circuit
23
Valve, tap
Water flow closing in hot water treatment circuit
24
Valve, tap
Pump service in heating system network
25
Non-return valve
Preventing a backward flow through another pump
branch of non-operating network
26
Pump
Water flow maintenance in heating system
27
Filter
Solids collection
28
Pressure gauge
Water pressure control in a return water pipe
29
Non-return valve
Water flow retention from getting into a fill line
30
Valve, tap
Replenishment water flow closing